Performance evaluation of four-wave mixing in a graphene-covered tapered fiber

JIN Qiang; LU Jiamei; LI Xibin; YAN Qiang; GAO Qianyu; GAO Shiming

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Performance evaluation of four-wave mixing in a graphene-covered tapered fiber

JIN Qiang,LU Jiamei,LI Xibin,YAN Qiang,GAO Qianyu,GAO Shiming * #

Centre for Optical and Electromagnetic Research, State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310058

*Correspondence author

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Funding: Specialized Research Fund for the Doctoral Program of Higher Education of China （No.No. 20130101110089）

Opened online:26 April 2017

Accepted by: none

Citation: JIN Qiang,LU Jiamei,LI Xibin.Performance evaluation of four-wave mixing in a graphene-covered tapered fiber[OL]. [26 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4725193

Four-wave mixing in a monolayer graphene-covered tapered fiber is theoretically analyzed by taking into account the influence of graphene layer on the light field distribution. A figure-of-merit (FOM) coefficient considering both the high nonlinearity and the heavy absorption is redefined to evaluate the nonlinear performance. The fiber diameter and length are optimized to acquire a higher FOM. Using such a graphene-covered tapered fiber with an optimal diameter of 0.736 μm, a maximum conversion efficiency of -38.07 dB is numerically obtained for the 1.55-μm pump when the graphene length is 34.4 μm and the peak pump power is 10 W. Moreover, a 3-dB bandwidth as broad as 430 nm can be realized in the 1.55-μm telecommunication band.

Keywords:graphene-covered fiber; figure of merit; nonlinearity; four-wave mixing

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